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82 Cards in this Set

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po Dose recommendations for Bumetanide in Chronic Heart Failure
* Initial: 0.5 to 1 mg qd or bid * Maximum total daily dose: 10 mg
po Dose recommendations for Furosemide in Chronic Heart Failure
* Initial: 20 to 40 mg qd or bid *Maximum total daily dose: 600 mg
po Dose recommendations for Torsemide in Chronic Heart Failure
* Initial: 10 to 20 mg qd * Maximum total daily dose: 200 mg
IV Dose recommendations for Bumetanide in Severe Heart Failure
* Initial: 1 mg *Maximum single dose: 4 to 8 mg
IV Dose recommendations for Furosemide in Severe Heart Failure
* Initial: 40 mg * Maximum single dose: 160 to 200 mg
IV Dose recommendations for Torsemide in Severe Heart Failure
* Initial: 10 mg *Maximum single dose: 100 to 200 mg
When do you initiate conintuous IV infusion of a loop diuretic?
When you have reached the MAX single IV dose and the patient still has edema
po Dose recommendations for Metolazone (for sequential nephron blockade) in Chronic Heart Failure
2.5 to 10 mg qd plus a loop diuretic
po Dose recommendations for Chlorothiazide IV (for sequential nephron blockade) in Chronic Heart Failure
250 to 500 mg qd or bid plus a loop diuretic
po Dose recommendations for Hydrochlorothiazide (for sequential nephron blockade) in Chronic Heart Failure
12.5 to 25 mg qd or bid plus a loop diuretic
po Dose recommendations for Chlorothiazide IV (for sequential nephron blockade) in Severe Heart Failure
250 to 1000 mg IV once or twice plus a loop diuretic once
Convert po Furosemide 80 mg to IV Furosemide
40 mg Furosemide IV (when going from po to IV cut the dose in half)
Convert IV Furosemide 80 mg to po Furosmide
160 mg Furosemide po (when going from IV to po double the dose)
Convert from 5 mg Bumetanide po to Furosemide po
200 mg Furosemide po (the "exchange rate" is 1 mg Bumetanide to 40 mg Furosemide)
Convert from 80 mg Furosemide po to Torsemide po
40 mg Torsemide po (the "exchange rate" is 20 mg Furosemide to 10 mg Torsemide)
Convert from 5 mg Bumetanide IV to Bumetanide po
5 mg Bumetanide po (Bumetanide is 100% bioavailable po)
Convert from 100 mg Torsemide po to Torsemide IV
100 mg Torsemide IV (Torsemide is 100% bioavailable po)
What is the major role of loop diuretics in HF?
decrease plasma volume
What are the effects of loop diuretics on mortality?
no improvement in outcomes
What are the side effects associated with loop diuretics?
decreased levels of Mg, K, Ca, aotemia, metabolic alkalosis
What is the risk of a K level below 4 or above 5.5?
increased risk of arrhythmias
What monitoring is necessary when administering a loop diuretic?
* Chem-7, mental status, input/output, weight, edema * Inpatient: daily * Outpatient: weight daily at home, electrolytes q2wks x 1 month, then monthly
What is the effect of Hydralazine?
arterial vasodilation which leads to a decrease in afterload
What are doses for Hydralazine?
*Initial: 10 to 25 mg Hydralazine po TID to QID * MAX: 75 mg po TID to QID
What side effects are associated with Hydralazine?
drug induced Systemic Lupus Erythematosus (15%)
What is the effect of Isosorbide Dinitrate (ISDN)?
venous vasodilation which leads to a decrease in preload
What are the recommended doses for Isosorbide Dinitrate (ISDN)?
10-40 mg Isosorbide Dinitrate po TID
What are the side effects associated with Isosorbide Dinitrate (ISDN)?
hypotension, headache, dizziness
What are the side effects associated with Hydralazine/Isosorbide Dinitrate combination therapy?
Headache (19% of patients may not tolerate)
What is the effect of Angiotensin II on Vascular smooth muscle?
increased arteriolar constriction leading to increased arterial blood pressure
What is the effect of Angiotensin II on Central & peripheral nervous system?
facilitation of sympathetic activity which leads to increased arteriolar constriction and increased cardiac output leading to increased arterial blood pressure
What is the effect of Angiotensin II on the adrenal cortex?
increased aldosterone secretion which leads to increased Na resorption leading to increased arterial blood pressure
What is the effect of Angiotensin II on the kidney directly?
* in the tubules: increased Na resorption leading to increased arterial blood pressure * In the arterioles: increased filtration fraction leading to increased Na resorption leading to increased arterial blood pressure and decreased GFR leading to Na and H2O retention leading to increased arterial blood pressure
What is the effect of Angiotensin II on the brain?
increased ADH leading to increased H2O resorption, Na and H2O retention leading to increased arterial blood pressure AND increased thirst leading to increased H2O ingenstion, Na and H2O retention leading to increased arterial blood pressure
What are the recommended doses for Captopril?
* Initial: 6.25 mg TID *MAX: 50 mg TID
What is a benefit of Captopril?
It is short acting so you can initiate a patient on a "challenge" starting at 6.25 mg TID then 12.5 TID, then 25 mg TID then switch to another agent
What are the recommended doses for Enalapril?
* Initial 2.5 mg BID *MAX: 10 to 20 mg bid
What are that recommended doses for Lisinopril?
* Initial 2.5 to 5 mg qd *MAX: 20 to 40 mg qd
What is the MOA of ACE inhibitors?
inhibit the angiotensin converting enzyme leading a decrease in angiotensin II and inhibit the breakdown of Bradykinin leading to an increase in Bradykinin
What are the patient considerations with ACE inhibitors?
1. Adherance b/c this drug is a life saver

2. Side effects: Dry cough, renal dysfunction, hyperkalemia, angioedema, neutropenia, hypotension

3. Monitoring: Chem-7 with Mg and CA q2wks x 1 month then monthly, CBC monthly, BP q2wks x1 month then monthly (timelines are outpatient - inpatient all are checked daily)

4. Drug interactions: Lithium, NSAIDS, Salt subs, Loop diuretics, K sparing diuretics

5. Contraindications: Pregnancy, Hx of angioedema, renal artery stenosis, hyperkalemia
Benefits to using an ACE inhibitor?
* Reduce all cause mortality, reduce mortality related to HF, reduce hospitalizations for HF, improve overall symptoms

* Greater benefit with worsening HF 10-60% with class I benefiting ~10% and class IV benefiting ~60%

* Prevent new onset DM and HF

* No difference in all cause mortality between high vs. low doses. Using a lower dose allows you to get more drugs on board with the patient.
What is the MOA of ARBs?
Blocks the Angiotensin II receptor which bypasses non-renin and non-ACE pathways to decrease Angiotensin II
What are the recommended doses for Candesartan?
* Initial: 4 to 8 mg qd * MAX: 32 mg qd
What are the recommended doses for Losartan?
* Initial: 25 to 50 mg qd * MAX: 50 to 100 mg qd
What are the recommended doses for Valsartan?
* Initial: 20 to 40 mg bid * MAX: 160 mg bid
What are the patient considerations for ARBs?
1. Adherance - keep appointments 2. Side effects: well tolerated with less angioedema than ACEi's, hyperkalemia, uricosuric effects, renal dysfunction, neutropenia 3. Drug interactions: not listed 4. Precautions/Contraindications: overproducers of uric acid, pregnancy, volume depletion, renal artery stenosis
What are the benefits of using an ARB?
* At least as effective as an ACEi in reducing all cause mortality, suddeen death, and hospitalization * Can prevent new onset DM
What are the effects of Digoxin?
* Resets the baroreceptors, inotropic effects, switches off the sympathetic response and turns on the parasympathetic nervous system
What are the optimal serum concentrations for Digoxin?
0.5 to 0.8 mcg/L serum concentrations over 1.2 mcg/L are toxic
What are the monitoring parameters for Digoxin?
Serum concentrations and Electrolytes: Mg, Ca, K, BUN, Scr…Especially K and Scr
What are signs of Digoxin toxicity?
N/V, anorexia, bradycardia, heart block, green halos
What drug interactions with Digoxin?
Propafenone, Qunidine, Amiodarone, Macrolides (Erythromycin and Clarythromycin. Inducers: St Johns Wart and Rifampin (cut dose by 50%)
What are the benefits of using Digoxin?
No effect on all cause mortality, but does decrease hospitalization for worsening HF, reduced combination of hospitalization and death via HF but with high risk of arrhythmias
Are patients usually taken off Digoxin one it has been started?
removal of Digoxin increases the risk for HF exacerbation
Is there an increased risk of death in women vs men?
Once serum concentrations were looked at more closely, it was found that there is no sex related difference in Dig mortality
What are the beneficial effects of Beta blockers?
Block the down regulation of beta1 receptors, inhibit apoptosis/oxidative stress, decreased arrhythmia potential, and inhibit hypertrophy/fibrosis (think of Beta blockers as a shield blocking the heart from the negative effects of NE)
What are the three classes of Beta blockers?
* First generation are non-selective beta blockers - Propranolol, Nadolo, and Timolol (not used in HF) * Second generation are Beta1 selective beta blockers - Atenolol, Bisoprolol, and Metoprolol/Metoprolol XL * Third generation beta blockers have other benefits like alpha inhibition or glycoprotein effects - Bucindolol, Carvedolol, and Labetolol
What three beta blockers are most often used in HF?
Bisoprolol, Carvedilol, and Metroprolol XR
What are the recommended doses of Bisoprolol?
* Initial: 1.25 mg qd * MAX: 10 mg qd
What are the recommended doses of Carvedilol?
* Initial: 3.125 mg bid * MAX: 25 mg bid
What are the recommended doses of Metoprolol XR?
* Initial: 12.5 to 25 mg qd *MAX: 200 mg qd
Which patients are appropriate candidates for Beta blocker therapy?
* Mild or moderate symptoms of HF (classes II, III, and class IV if stable, not on IV drugs) *Systolic dysfunction of the left ventricle (EF <40%) * Receiving treatment with an ACE inhibitor and a diuretic *Any age and either sex * CAD or nonischemic dilated cardiomyopathy * Diabetic and nondiabetic * COPD without reactive airway disease
When should treatment with a beta blocker be ideally started?
* Tx with a diuretic so that the patient has minimal evidence of fluid retention * Tx with an ACE inhibitors *No recent use of IV vasodilators or positive inotropic agents * Systolic bloop pressure > or = 90 mmHg * HR > 60 BPM (unless tx with pacemaker)
List patient education points for beta blocker therapy.
* Tell patients that they are going to feel like crap for the first 3 months then they are going to feel like a million bucks (crap phase is from coming down off the CCAs) * Patient needs to weigh themselves 2-3 times daily and call in if they gain 2-3 lbs * Call immediately if any signs of SOB, edema, bradycardia, or weight gain * Never stop the beta blocker unless the patient has 3rd degree heart block or is in cardiogenic shock - cut dose in half if needed
Which should be started first an ACEi or a beta blocker?
This is a point of controversy but the ACEi and diuretic should still be started first
If both and ACEi and a beta blocker are on board, which one do you increase the dose on first?
Always increase the beta blocker to the highest possible dose to have the most decrease risk of mortality
What are the effects of Aldosterone in HF?
* Mg/K loss leading to QT dispersion and ventricular arrhythmias leading to cardiac death * Sympathetic activation leading to tachycardia ischemia leading to QT dispersion and ventricular arrhythmias leading to cardiac death * Parasympathetic inhibition leading to Tachycardia ischemia leading to QT dispersion and ventricular arrhythmias leading to cardiac death * Myocardial fibrosis leading to QT dispersion and ventricular arrhythmias leading to cardiac death
What are the effects of Aldosterone on the body?
* Heart - Myocardial fibrosis, ventricular arrhythmias, left ventricular hypertrophy * Vasculature - HTN, fibrosis, endothelial dysfunction, inhibits NO synthesis, prothrombotic * Kidney - Na retention and K/Mg loss * CNS - increased Catecholamines
What are the dosing recommendations for spironolactone?
* Initial: 12.5 to 25 mg qd *MAX: 25 mg qd or bid
What are the dosing recommendations for Eplerenone?
* Initial: 25 mg qd * MAX: 50 mg daily
What side effects does Spironolactone have that Eplerenone does not?
Gynecomastia (10 to 15%)and errectile dysfunction because Spirononlactone blocks the Androgen receptors while Eplerenone only block the Mineralocorticoid receptors
What are the benefits of Spironolactone?
In class III to IV patients: reduction in CV & HF mortality, sudden death, CV & HF hospitalization
What are the benefits of Eplerenone?
In class I-II post MI patients: reduction in all cause mortality, sudden death, and death from CV mortality or hospitalization
Steps to Minimize hyperkalemia
1.  Impaired renal function is a risk factor for hyperkalemia during treatment with aldosterone antagonists. This risk increased progressively when Scr exceeds 1.6 mg/dL. ClCr > 30 mL/min is recommended. 2. Aldosterone antagonists should not be administered to patients with baseline serum K > 5.0 mEq/L 3. Intial doses of spironolactone 12.5 mg or eplerenone 25 mg is recommended, then the dose can be increased to spironolactone 25 mg or eplerenone 50 mg if appropriate 4. Risk of hyperkalemia is increased with concomitant use of higher doses of ACEi’s (captopril 75 mg qd or more, emalapril or Lisinopril 10 mg qd or more) – Minimize the ACEi dose 5. NSAIDS and COX-2 inhibitors should be avoided 6. K supplements should be reduced or discontinued 7. Close monitoring of serum K is required. K levels and renal function should be checked in 3 days and at 1 week after initiation of therapy and at least monthly for 3 months. FOLLOW this schedule or don’t use 8. Diarrhea or other causes of dehydration should be addresses emergently
What other agents can be used in HF?
* Dihydropyridine CCBs - amolodipine, fenlodipine * Warfarin with an INR of 2-3 this is debateable *Amiodarone - used in atrial fibrillation * Statins - reduce hospitalizations independent of LDL * Hydralazine-ISDN 20 mg/37.5 mg TID especially in African Americans
Why focus on African American patients?
HF effects ~ 3% of the African American population, Occurs at an earlier age, Disease severity is more advanced, and African Americans have a higher rate of hospitalization & 1.8 x higher mortality rate, NO deficiency, TGFB mRNA, decreased role of RRA and increased endothelin-1
What are the benefits of using Hydralazine-ISDN 20 mg/37.5 mg TID in the african american population?
* decrease in mortality (30%), improved quality of life, and prolongs the time before the first time hospitalization for HF
Can Hydralazine-ISDN replace an ACEi or beta blocker in the african american population?
NO
When should treatment with Hydralazine-ISDN be started?
First ACEi/diuretic, then Beta blocker, then Digoxin, then Hydralazine-ISDN
A 75 year old male with EF of 25% is receiving the following medications: Lisinopril 2.5 mg qd, ASA 81 mg qd, Digoxin 0.125 mg qd, Furosemide 40 mg bid, Carvedilol 12.5 mg qd, and Spironolactone 25 mg qd. His BP is 120/70 mmHg, Dig level is 0.8 ng/mL, and Scr of 1.3 mg/dL. Which of the following therapeutic strategies could furthur improve his outcomes (i.e. mortality)? A. Increase Lisinopril to 20 mg qd B. Increase Carvedilol to 25 mg bid C. Increase Furosemide to 80 mg bid D. Increase Digoxin to acheive a serum concentration of 1.5 ng/mL
B. Increase Carvedilol to 25 mg bid
How are Stage A patients managed?
Goals: Treat HTN, Smoking sessation, treat hyperlipedemia, encourage exercise, Discourage alcohol intake and illicit drug use, Control metabolic syndrome * Drugs: Antiplatelet - ASA 81 mg - 325 mg or Plavix (clopidegrel), AntiHTN - ACEi or ARB, Lipid control - Statins for anti-inflammatory benefits above and beyond LDL control (Goal is LDL <70)
How are Stage B and Stage C patients managed?
Goals: Treat HTN, Smoking sessation, treat hyperlipedemia, encourage exercise, Discourage alcohol intake and illicit drug use, Control metabolic syndrome Drugs: 1) ACEi plus a loop diuretic (if patient does not tolerate ACEi, then use and ARB or Hydralazine/ISDN) 2) add a Beta blocker 3) If still s/s add Digoxin 4)If still s/s add aldosterone antagonist &/or ARB